The High People's Court is seen during the appeal trial of Vietnamese prominent blogger Anh Ba Sam, whose real name is Nguyen Huu Vinh, and his assistant Nguyen Thi Minh Thuy in Hanoi, Vietnam September 22, 2016. REUTERS/Kham

Policemen stop and check a pass of Le Thi Minh Ha, wife of Vietnamese prominent blogger Anh Ba Sam whose real name is Nguyen Huu Vinh, before his appeal trial and of Vinh's assistant Nguyen Thi Minh Thuy in Hanoi, Vietnam September 22, 2016. REUTERS/Nguyen Tien Thinh

A live screen from the courtroom reserved for media and diplomats shows policemen removing the handcuffs of Vietnamese prominent blogger Anh Ba Sam, whose real name is Nguyen Huu Vinh (center R), and his assistant Nguyen Thi Minh Thuy (center L) during their appeal trial in Hanoi, Vietnam September 22, 2016. REUTERS/Kham

A journalist takes a photo of a live screen from the courtroom showing Vietnamese prominent blogger Anh Ba Sam whose real name is Nguyen Huu Vinh (L), and his assistant Nguyen Thi Minh Thuy, during their appeal trial in Hanoi, Vietnam September 22, 2016. REUTERS/Kham

Policemen stop and check papers of Le Thi Minh Ha (2nd R), wife of Vietnamese prominent blogger Anh Ba Sam whose real name is Nguyen Huu Vinh, Vinh's lawyer Tran Van Tao (2nd L) and Vinh's son Nguyen Huu Phuc (R), before his appeal trial and of Vinh's assistant Nguyen Thi Minh Thuy in Hanoi, Vietnam September 22, 2016. REUTERS/Nguyen Tien Thinh

Policemen block the road to a High People's Court before the appeal trial of Vietnamese prominent blogger Anh Ba Sam, whose real name is Nguyen Huu Vinh, and of his assistant Nguyen Thi Minh Thuy in Hanoi, Vietnam September 22, 2016. REUTERS/Nguyen Tien Thinh

Members of the media and diplomats watch a live screen from the courtroom showing Vietnamese prominent blogger Anh Ba Sam whose real name is Nguyen Huu Vinh (L), and his assistant Nguyen Thi Minh Thuy during their appeal trial in Hanoi, Vietnam September 22, 2016. REUTERS/Kham

A woman passes by food displayed at a market in Rio de Janeiro, Brazil, September 24, 2015. REUTERS/Pilar Olivares